Regular crash in modifying regex

Kornel Benko kornel at
Wed Jan 13 23:58:40 UTC 2021

How to reproduce

1.) Open lyx file e.g. Additional.lyx
2.) select AdvFind
3.) select regexp-mode
4.) insert any text not in this file
5.) select search for section
6.) change to not ignore format
7.) start search
8.) cancel the search (with escape)
9.) clean the regex content and try to insert anything ==> crash

BTW, lyx2.3 does not crash.

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